Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi tac can snippets" » "phoi tac can snippets", "hoi trac can snippets", "hop tac can snippets", "khoi tac van snippets", "khoi tac quan snippets", "khoi tac vang snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("khoi tac can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi tac can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi tac can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi tac can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.